Toothbrush



March 5, 1929. 5 3 FRlEDLAND 1,704,564

TOOTHBRUSH Filed March 16, 1928 IHVE-N TOR, Salaman B. F'megland,

By mam,

Attorneys.

Patented Mar. 5, 1929.

] UNITED STATES soLomoN B. FRIEDLAND, or mnmmaronrs, INDIANA.

moo'rnsnnsn.

Application filed March 1c, 1928. Serial m. 262,216.

This invention relates to a toothbrush having a detachable head andparticularly to the means for retaining the head-on the brush handle.

5 I am aware that there are several forms of brushes having detachableheads, but I find in my practice that in such brushes heretofore madethe head is easily pulledoff in accidentally strikin the end of thebrush against a tooth to t e annoyance of the patient, and furthermorethat there is not suflicient material through the center of the brushhead. to afford the proper resilience as well as stability of the head.7

I overcome these faults by the structure as herein described inreference to the accompanying drawing, in which Fig. 1 is a top planview of a toothbrush embodying my invention;

Fig. 2, a fragmentary side elevatlon of the brush Y Fig. 3, a verticaltransverse section through the brush head back only on the line 3-3 inFi 2' i ig. 4, an underside plan view of the brush head back;

- Fig. 5, a top plan view of the brush head; and Fig. 6, an endelevation of the head.

Like characters of reference indicate like parts throughout the severalviews in the drawing.

I form a handle 10 with a head end having a forward lug 11 and a rearlug 12 each depended from the underside plane surface.

These lugs 11 and 12 are spaced apart and each has a shoulder formedtherearound at its lower end. The shoulder on the lug 11 projectslaterally from the lu from both sides and from the front but oes notproject from the rear end of the lug. "The shoulder on the rear lug 12projects from both sides and the rear end but does not project from thefront end. The lugs 11 and 12 therefore present smooth parallel facestoward each other.

Across the forward end of the head end is a downwardly and rearwardlyextended projection 14 spaced ahead of the lug 11 and terminating by itslower end substantially on the line of the shoulder on the lug. Asimilar projection 15 extends downwardly and forwardly from the rear endof the head end of the handle 10 toward the shoulder of the rear lug 12.

A brush head 16 is formed of resilient rubber to have a body 17 in whichis molded sockets 18 and 19 of substantially the shape of the lugs 11and 12 and the shoulders thereon. A plurality of rubber teeth 21 dependintegral y from the bod A lip 20 extends from each end of the body fromthe top. The head 16 is attached to the handle 10 by pressing the body17 against the lugs 11 and 12 to force the-lugs down into the sockets 18and 19 to permit the shoulders of thelugs to enter into the enlargedlower ends of the sockets in the head. At the same time, the lips 20 areentered and pressed under the projections 14 and 15.

The head 16 .is then effectively retained on the handle and can not beremoved until intentionally and forcibly pulled off.

It is to be noted that through the center of the body 17 there is a fullcushion of rubber behind the teeth 21 and between the lugs 11 and 12.Theprojections 14 and 15 ai materially in retaining the head 16 in placesince theycooperate with the lug shoulders in gripp' g the ends of thehead against the handle surface. 1 v I While I have here described myinvention in the form now best known to me, it is obvious that thestructure may be varied without departing from'the spirit of theinvention and I, therefore do not Want to be limited to the precise formas shown and described nor any more than may be necessitated by thefollowing claims.

I clann:

1. A tooth brush comprising a handle, a pair of lugs spaced apartthereon, shoulders laterally projected from the sides of the lugs, aprojectlon extended from the handle toward the rear end of one of saidlugs, an elastic brush head havin sockets formed therein to engage oversald shoulders, and a lip from said head adapted to be received undersaid projection.

2. A tooth brush comprising a handle, a pair of lugs spaced apart on oneend of the handle, a shoulder extended laterally from the two sides andforward end of the forward lug of said pair, a shoulder extendedlaterally from the two sides and rear end of the. rear lug of said pair,a projection extended downwardly and forwardly toward the shoulderextending from the rear end of the rear lug having a space therebetween, a brush head having sockets therein to en- 110 gage over saidshoulders and a lip from the the second lug, a projection extendeddownend of said head adapted to be received and wardly and forwardlytoward the rear end retained under said projection. of the second lug,an elastic brush head hav- 3. A tooth brush comprising a handle, a ingsockets in its back to engage over said 5 lug thereon, a shoulderextended forwardly two lugs and shoulders, and a lip at each 15 fromtheouter end of the lug, a guard lip end of the brush to be engagedunder saidextending downwardly and rearwardly from guard lip and saidprojection respectively. the handle end toward said shoulder, a sec- Intestimony whereof I aflix my signature.

0nd lug spaced from the first lug, a shoulder 10 extended rearwardlyfrom the rear end of SOLOMON B. FRIEDLAND.

